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In the figure, two particles, each with mass m = 0.79 kg,are fastened to each other, and to a rotation axis at O,by two thin rods, each with length d = 6.0 cm and massM = 1.2 kg. The combination rotates around the rotationaxis with angular speed ω = 0.33 rad/s. Measuredabout O, what is the combination's kinetic energy?
An ambulance moving at 37 m/s sounds its siren whose frequency is 500 Hz. What frequency does a person in the car hear as the ambulance approaches the car
A wooden board that is 50 cm long, 20 cm long, and 4 cm thick is floating in water. Rocks are then carefully placed on the top face of the board until the top of the wood just slips below the water surface. The density of water is 1000 kg/m^3 and ..
A simple harmonic oscillator takes 10s to undergo five complete vibrations.
A driver wearing a seatbelt decelerates at roughly the similar rate as the car itself. Since modern cars have a "crumple zone" built into the front of the car, the car would decelerate over a distance of roughly 1.20 m. Determine net force acting ..
Sally travels by car from one city to another. She drives for 24 min at 63.0 km/h, 52.0 min at 42.0 km/h, and 18.0 min at 81.0 km/h, and she spends 5 min eating lunch and buying gas.
A ball is thrown at an angle of 40o and speed 110m/s. Assume the object is launched from the origin of your coordinate system. How much time before the object lands
In Europe, the standard voltage is 240 V (rms), AC, and 50 cycles/s. Suppose you take your 5.00 W electric razor to Rome and plug it into the receptacle, What is the resistance of your razor
A simple refracting telescope provides large magnification by employing
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. What width of the north wall can she see
A railroad car of mass 40900 kg moving at 3.35m/s collides and couples with two railroad cars,each of the same mass as the single car and moving in the same direction at 1.53m/s. what is the speed of three cars after the collision.
a vertical 1.10-m length of 18-gauge diameter of 1.024 mm copper wire has a 200.0-n ball hanging from it. what is the
A 3.00 kg block starts from rest at the top of a 30° incline and slides a distance of 1.80 m down the incline in 1.30 s. Find the magnitude of the acceleration of the block
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